| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fipa-ra -fomit-frame-pointer -fno-optimize-sibling-calls" } */ |
| /* { dg-additional-options "-mregparm=1" { target ia32 } } */ |
| |
| /* Test -fipa-ra optimization on self-recursive function. */ |
| |
| static int __attribute__((noinline)) |
| bar (int x) |
| { |
| if (x > 4) |
| return bar (x - 3); |
| return 0; |
| } |
| |
| int __attribute__((noinline)) |
| foo (int y) |
| { |
| return y + bar (y); |
| } |
| |
| /* Check that no registers are saved/restored. */ |
| /* { dg-final { scan-assembler-not "push" } } */ |
| /* { dg-final { scan-assembler-not "pop" } } */ |
| |
| /* Check that addition uses dx. */ |
| /* { dg-final { scan-assembler-times "addl\t%\[re\]?dx, %\[re\]?ax" 1 } } */ |
| |
| /* Verify that bar is self-recursive. */ |
| /* { dg-final { scan-assembler-times "call\t_?bar" 2 } } */ |
